The fact it has had the highest rating finale figures in other years suggests otherwise… But ok.
I guess I still don’t get your point. If shows last over 10 years doesn’t that just prove they do have longevity? The US might have reality shows that stay on air for longer but they aren’t normally the number 1 rating show of the night. Look at Masterchef in the US, The Bachelor, Big Brother etc. they are all in the Summer or on Friday nights. Survivor US has been slowly declining for years and isn’t the number 1 rated show. There is a different culture in Australia where those shows do last longer and rate higher.